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[LeetCode] 1128. Number of Equivalent Domino Pairs #1128
Given a list of dominoes, dominoes[i] = [a, b] is equivalent to dominoes[j] = [c, d] if and only if either (a==c and b==d), or (a==d and b==c) - that is, one domino can be rotated to be equal to another domino.
Return the number of pairs (i, j) for which 0 <= i < j < dominoes.length, and dominoes[i] is equivalent to dominoes[j].
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[-][LeetCode] 1128. Missing Problem[/-][+][LeetCode] 1128. Number of Equivalent Domino Pairs[/+]